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CLP(BN) fixes 

git-svn-id: https://yap.svn.sf.net/svnroot/yap/trunk@2096 b08c6af1-5177-4d33-ba66-4b1c6b8b522a
This commit is contained in:
vsc 2008-02-13 11:57:46 +00:00
parent a4a26478e0
commit d86f30a2eb
8 changed files with 58 additions and 21 deletions
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4
CLPBN/clpbn/bnt.yap
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@ -374,8 +374,8 @@ add_evidence(Graph, Size, Is) :-
[engine, loglik] <-- enter_evidence(engine, evidence).
mk_evidence([], [], []).
mk_evidence([V|L], [I|Is], [ar(1,I,Val)|LN]) :-
clpbn:get_atts(V, [evidence(EvVal),dist(Id,_)]), !,
mk_evidence([V|L], [I|Is], [ar(1,I,EvVal)|LN]) :-
clpbn:get_atts(V, [evidence(EvVal)]), !,
mk_evidence(L, Is, LN).
mk_evidence([_|L], [_|Is], LN) :-
mk_evidence(L, Is, LN).

2
CLPBN/clpbn/discrete_utils.yap
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@ -34,7 +34,7 @@ generate_szs_with_evidence([_|Out],Ev,Ev,[ok|Evs],found) :- !,
generate_szs_with_evidence(Out,Ev,I,Evs,found).
generate_szs_with_evidence([_|Out],Ev,I0,[not_ok|Evs],Found) :-
I is I0+1,
generate_szs_with_evidence(Out,Ev,I0,Evs,Found).
generate_szs_with_evidence(Out,Ev,I,Evs,Found).
find_projection_factor([V|Deps], V1, Deps, [Sz|Szs], Szs, F, Sz) :-
V == V1, !,

16
CLPBN/clpbn/dists.yap
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@ -180,20 +180,20 @@ get_dist_nparams(Id, NParms) :-
get_evidence_position(El, Id, Pos) :-
recorded(clpbn_dist_db, db(Id, _, _, Domain, _, _), _),
nth0(Pos, El, Domain), !.
nth0(Pos, Domain, El), !.
get_evidence_position(El, Id, Pos) :-
recorded(clpbn_dist_db, db(Id, _, _, Domain, _, _), _), !,
throw(error(domain_error(evidence,Id),add_evidence(Ev,Domain))).
recorded(clpbn_dist_db, db(Id, _, _, _, _, _), _), !,
throw(error(domain_error(evidence,Id),get_evidence_position(El, Id, Pos))).
get_evidence_position(El, Id, Pos) :-
throw(error(domain_error(no_distribution,Id),add_evidence(Ev,Domain))).
throw(error(domain_error(no_distribution,Id),get_evidence_position(El, Id, Pos))).
get_evidence_from_position(El, Id, Pos) :-
recorded(clpbn_dist_db, db(Id, _, _, Domain, _, _), _),
nth0(Pos, El, Domain), !.
nth0(Pos, Domain, El), !.
get_evidence_from_position(El, Id, Pos) :-
recorded(clpbn_dist_db, db(Id, _, _, Domain, _, _), _), !,
throw(error(domain_error(evidence,Id),add_evidence(Ev,Domain))).
recorded(clpbn_dist_db, db(Id, _, _, _, _, _), _), !,
throw(error(domain_error(evidence,Id),get_evidence_from_position(El, Id, Pos))).
get_evidence_from_position(El, Id, Pos) :-
throw(error(domain_error(no_distribution,Id),add_evidence(Ev,Domain))).
throw(error(domain_error(no_distribution,Id),get_evidence_from_position(El, Id, Pos))).
dist_to_term(_Id,_Term).

45
CLPBN/clpbn/gibbs.yap
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@ -19,7 +19,8 @@
[member/2,
append/3,
delete/3,
max_list/2]).
max_list/2,
sum_list/2]).
:- use_module(library(ordsets),
[ord_subtract/3]).
@ -38,12 +39,16 @@
:- use_module(library('clpbn/topsort'), [
topsort/2]).
:- use_module(library('clpbn/display'), [
clpbn_bind_vals/3]).
:- dynamic gibbs_params/3.
:- dynamic implicit/1.
gibbs([],_,_) :- !.
gibbs(LVs,Vs0,_) :-
gibbs(LVs,Vs0,AllDiffs) :-
LVs = [_], !,
clean_up,
check_for_hidden_vars(Vs0, Vs0, Vs1),
sort(Vs1,Vs),
@ -52,8 +57,12 @@ gibbs(LVs,Vs0,_) :-
initialise(Vs, Graph, LVs, OutputVars, VarOrder),
% write(Graph),nl,
process(VarOrder, Graph, OutputVars, Estimates),
write(Estimates),nl,
sum_up(Estimates, [LPs]),
% write(Estimates),nl,
clpbn_bind_vals(LVs,LPs,AllDiffs),
clean_up.
gibbs(LVs,_,_) :-
throw(error(domain_error(solver,LVs),solver(gibbs))).
initialise(LVs, Graph, GVs, OutputVars, VarOrder) :-
init_keys(Keys0),
@ -386,7 +395,7 @@ gen_e0(Sz,[0|E0L]) :-
process_chains(0,_,F,F,_,_,Est,Est) :- !.
process_chains(ToDo,VarOrder,End,Start,Graph,Len,Est0,Estf) :-
process_chains(Start,VarOrder,Int,Graph,Len,Est0,Esti),
(ToDo mod 100 =:= 0 -> statistics,cvt2problist(Esti, Probs), Int =[S|_], format('did ~d: ~w~n ~w~n',[ToDo,Probs,S]) ; true),
% (ToDo mod 100 =:= 0 -> statistics,cvt2problist(Esti, Probs), Int =[S|_], format('did ~d: ~w~n ~w~n',[ToDo,Probs,S]) ; true),
ToDo1 is ToDo-1,
process_chains(ToDo1,VarOrder,End,Int,Graph,Len,Esti,Estf).
@ -496,3 +505,31 @@ show_sorted([I|VarOrder], Graph) :-
clpbn:get_atts(V,[key(K)]),
format('~w ',[K]),
show_sorted(VarOrder, Graph).
sum_up([[]|_], []).
sum_up([[[Id|Counts]|More]|Chains], [Dist|Dists]) :-
add_up(Counts,Chains, Id, Add,RChains),
normalise(Add, Dist),
sum_up([More|RChains], Dists).
add_up(Counts,[],_,Counts,[]).
add_up(Counts,[[[Id|Cs]|MoreVars]|Chains],Id, Add, [MoreVars|RChains]) :-
sum_lists(Counts, Cs, NCounts),
add_up(NCounts, Chains, Id, Add, RChains).
sum_lists([],[],[]).
sum_lists([Count|Counts], [C|Cs], [NC|NCounts]) :-
NC is Count+C,
sum_lists(Counts, Cs, NCounts).
normalise(Add, Dist) :-
sum_list(Add, Sum),
divide_list(Add, Sum, Dist).
divide_list([], _, []).
divide_list([C|Add], Sum, [P|Dist]) :-
P is C/Sum,
divide_list(Add, Sum, Dist).

2
CLPBN/clpbn/graphs.yap
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@ -30,7 +30,7 @@ attribute_goal(V, node(K,Dom,CPT,TVs,Ev)) :-
clpbn:get_atts(V, [key(K),dist(Id,Vs)]),
get_dist(Id,_,Dom,CPT),
translate_vars(Vs,TVs),
( clpbn:get_atts(V, [evidence(_)]) -> true ; true).
( clpbn:get_atts(V, [evidence(Ev)]) -> true ; true).
translate_vars([],[]).
translate_vars([V|Vs],[K|Ks]) :-

6
CLPBN/clpbn/jt.yap
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@ -93,14 +93,14 @@ get_graph(LVs, BayesNet, CPTs, Evidence) :-
run_vars([], [], [], [], []).
run_vars([V|LVs], Edges, [V|Vs], [CPTVars-dist([V|Parents],Id)|CPTs], Ev) :-
clpbn:get_atts(V, [dist(Id,Parents)]),
add_evidence(V, Id, Ev, Ev0),
add_evidence_from_vars(V, Ev, Ev0),
sort([V|Parents],CPTVars),
add_edges(Parents, V, Edges, Edges0),
run_vars(LVs, Edges0, Vs, CPTs, Ev0).
add_evidence(V, Id, [e(V,P)|Evs], Evs) :-
add_evidence_from_vars(V, [e(V,P)|Evs], Evs) :-
clpbn:get_atts(V, [evidence(P)]), !.
add_evidence(_, _, Evs, Evs).
add_evidence_from_vars(_, Evs, Evs).
find_nth0([Id|_], Id, P, P) :- !.
find_nth0([_|D], Id, P0, P) :-

2
CLPBN/clpbn/matrix_cpt_utils.yap
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@ -49,7 +49,7 @@ project_from_CPT(V,tab(Table,Deps,_),tab(NewTable,NDeps,NSzs)) :-
matrix_dims(NewTable, NSzs).
evidence(V, Pos) :-
clpbn:get_atts(V, [evidence(Pos),dist(Id,_)]).
clpbn:get_atts(V, [evidence(Pos)]).
vnth([V1|Deps], N, V, N, Deps) :-
V == V1, !.

2
CLPBN/clpbn/vel.yap
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@ -81,7 +81,7 @@ find_all_clpbn_vars([V|Vs], [Var|LV], ProcessedVars, [table(I,Table,Parents,Size
var_with_deps(V, Table, Deps, Sizes, Ev, Vals) :-
clpbn:get_atts(V, [dist(Id,Parents)]),
get_dist_matrix(Id,Parents,_,Vals,TAB0),
( clpbn:get_atts(V, [evidence(_)]) -> true ; true),
( clpbn:get_atts(V, [evidence(Ev)]) -> true ; true),
reorder_CPT([V|Parents],TAB0,Deps0,TAB1,Sizes1),
simplify_evidence(Deps0, TAB1, Deps0, Sizes1, Table, Deps, Sizes).